Brush head



FIG. 1 is a perspective view of a brush head, showing a first embodiment of my new design;

FIG. 2 is a front elevational view of FIG. 1, the rear elevational view, left-side elevational view, and right-side elevational view all being identical thereto;

FIG. 3 is a top plan view of FIG. 1; and,

FIG. 4 is a bottom plan view of FIG. 1.

The broken lines in FIG. 3 depict portions of the brush head that form no part of the claimed design. 

CLAIM I claim the ornamental design for a brush head, as shown and described. 